Half the universe was missing... until now

  • Julkaistu 31.07.2020
  • Half of the ordinary baryonic matter has been tough to find but Fast Radio Bursts made it possible to detect the WHIM. Thanks to Kiwico for sponsoring this video! For 20% off go to kiwico.com/veritasium or use code VERITASIUM at checkout.
    Special thanks to Prof. Geraint Lewis ve42.co/gfl
    Nature paper: A census of baryons in the Universe from localized fast radio bursts
    Research and Writing by Max Levy, Derek Muller and Jonny Hyman
    Editing, Animations, Audio Mix & Mastering by Jonny Hyman
    Filmed by Raquel Nuno
    Thumbnail by Ignat Berbeci
    Music from Epidemic Sound epidemicsound.com

Kommentteja • 100

  • Vitaliy Stankovskiy
    Vitaliy Stankovskiy 3 minuuttia sitten

    Thanos must have died...

  • Basilis Xaralampidis
    Basilis Xaralampidis 40 minuuttia sitten

    Really nice Video!

  • Aero Pandora
    Aero Pandora 44 minuuttia sitten

    *"100000 - 10000000 Kelvin"*

    I'm sorry but I only speak Celsius. Can anyone here translate this for me?

  • Hiccup Haddock
    Hiccup Haddock Tunti sitten

    I think I totally underestimated the scale of the universe.....
    If 70% of baryonic matter is not in galaxies but in betweem galaxies,stars and other seeable stuff
    That means space is.....enormous, as there are literally 1-10 particles of hydrogen per cubic metre of empty space
    Not to mention the ionised hydrogen that's present there as well
    Space-time is.......
    I don't even think I can imagine it, The scale
    It is just so amazingly vast

  • Itskelvinn
    Itskelvinn Tunti sitten

    What an elegant end to the video. Brilliant

  • Lawrie Alush-Jaggs
    Lawrie Alush-Jaggs Tunti sitten

    Excellent video, thank you. And I like your final comments.

  • aviaxis
    aviaxis Tunti sitten

    how do you know what non-scientists like? are you one of them?

  • Micheal Rows
    Micheal Rows Tunti sitten

    If Baryons were Doritos, half the bag would be missing.

  • Micheal Rows
    Micheal Rows Tunti sitten

    Last time I was this early, baryons were a joke to me.

  • Adrian Koh
    Adrian Koh 2 tuntia sitten

    How to build a planet : go back in time when everything is super hot👌

  • Vyacheslav Ushakov
    Vyacheslav Ushakov 2 tuntia sitten

    Искусственный интеллект или искусство интеллекта. Вячеслав Ушаков fichannel.info/videot/nJ-ZsHmHrGBk1q8

  • Sk3tchfan45
    Sk3tchfan45 3 tuntia sitten

    Can u be my teacher?

  • Aaroiseverything
    Aaroiseverything 3 tuntia sitten +1

    I dont know how he comes up with all these mind blowing ideas for videos! Super interesting!!

  • Bloody Summers
    Bloody Summers 3 tuntia sitten

    Question I got when you said "20 minutes" after the big bang... Was the expanding universe so homogeneous that time was relatively running at the same rate everywhere in the universe? Or where are we counting those 20 minutes? Relativity just messed with my head 😅

  • tingkai shi
    tingkai shi 4 tuntia sitten

    I totally didn't get the explanation on 'why Baryon matters make up 5%of the universe', it pretty much jumped straight to the conclusion after the hydrogen atom ratio. I still liked this video for feed me with this interesting question.

  • Squirrel Man
    Squirrel Man 4 tuntia sitten

    when thanos's snap actually takes out half of the universe

    FROZEN FRIDGE 5 tuntia sitten

    Title is a stretch lol

  • Mr Murloc
    Mr Murloc 5 tuntia sitten


  • Darci Ford
    Darci Ford 5 tuntia sitten


  • Ben Palmer
    Ben Palmer 5 tuntia sitten

    Wrong structure of the universe.... , wheel and spin again~ Smashing particles aren't not shaping

  • Kevin Colt
    Kevin Colt 6 tuntia sitten

    i enjoy clicking 1/4 of video in and avoid all the spam and intros on utube videos.

  • George De Cruz
    George De Cruz 6 tuntia sitten

    Scientists used to be useful but now they're just making up stuff 🤦🏻

  • Victor Diaconescu
    Victor Diaconescu 6 tuntia sitten

    Wavelength hydrogen 420, nice. Can someone state some facts about 6:02 praise Kek

  • greg taylor
    greg taylor 6 tuntia sitten

    Oh , by the way. There is a large sector of so called main stream science that now believes there never was a big bang. It is physically impossible for it to have happened that way.

  • spiralphysics
    spiralphysics 6 tuntia sitten

    Love YOUR videos🙂🙂❤❤

  • James Kidwell
    James Kidwell 6 tuntia sitten

    That's why it was on sale...BUT WAIT!

  • Michel Tomassini
    Michel Tomassini 7 tuntia sitten

    Wow! I just started watching your videos more seriously and I must say that I am very impressed with the clarity of your explanations. Keep on your good work!

  • Gatra
    Gatra 7 tuntia sitten

    Im so interested in sciences thing but not interested in learning it.

  • Andrew Church
    Andrew Church 7 tuntia sitten

    Truely amazing and well beyond me. I just don’t get how we can be so accurate when ‘counting up’ all the stuff of the universe. Also, how complicated is all the math behind element proportions from Big Bang nucleo genisis, and the math of which process stops at which temperature, and how do you know the temperature at exact times after BB? Wouldn’t all these predicted facts vary wildly independently of final mass??
    Again, if this is right, I find it gob smacking we ever figured it out. It seems too difficult to believe that we have.

  • mikea hiooi
    mikea hiooi 8 tuntia sitten

    Quit sensationalizing! Only about 2.5% of the universe was missing.

  • Ignirium
    Ignirium 8 tuntia sitten

    mistakes reveal clues into what new things can be discovered.
    "I guess for now we'll have to be content with being right."
    Great joke :)

  • T W
    T W 8 tuntia sitten

    Damn dude you're looking old.

  • Adam Valent
    Adam Valent 9 tuntia sitten

    can someone explain to me please how can be light (or long range electromagnetic wave in this case) be bend or guided around the globe? I know EM radiation can deflect from atmosphere but how it can bend as shown is video?

    • mikea hiooi
      mikea hiooi 8 tuntia sitten

      the universe, I'm still not convinced "dark matter" and "dark energy" exist outside of compounded computational errors.

  • Maine Rock Flour
    Maine Rock Flour 9 tuntia sitten

    If it turns out not like they expected, they risk losing their funding. I don't know, this whole barion theory smells of a "Fudge Factor". Spread it on with a trowel, boys.

  • Ozmataz Groves
    Ozmataz Groves 9 tuntia sitten

    PSA: This video has flashing lights that may cause seizures for those with photosensitive epilepsy or just hurt your head/eyes if you're sensitive to it without seizures. Good video though 🙂

    EL NOODLE 9 tuntia sitten

    Man i've been watching your video's when your beard was still dark.

  • Doug Anderson
    Doug Anderson 10 tuntia sitten

    12:00 yeah, sorry.. but confirmation bias and researchers pushing their pet hypothesis is a massive problem across all science disciplines. to pretend like inflated ego's havent held discovery back to a degree that would make science-deniers proud is disingenuous.

  • Maarten Post
    Maarten Post 10 tuntia sitten

    How do magnetic fields guide the radio waves?

  • Jari Fuller
    Jari Fuller 10 tuntia sitten


  • Uvisir
    Uvisir 11 tuntia sitten

    love your channel mate!

  • Grigalius
    Grigalius 12 tuntia sitten

    I don't understand, so there is no dark matter ? If everything is explained with known matter.

  • dread true
    dread true 12 tuntia sitten

    Kiwi is my country is a fruit

  • A M
    A M 12 tuntia sitten +1

    Imagine universe sized lightning strikes. we would get zapped.

  • A M
    A M 12 tuntia sitten +1

    Can there be a lightning strike in outta space!? Galaxy sized lightning strikes!?

  • Harry Dee
    Harry Dee 13 tuntia sitten

    What is redshifted light ?

  • Mini ninja torpedo
    Mini ninja torpedo 14 tuntia sitten +1

    The problem is that the big bang is just speculation. The reality is that we cannot even speculate our own existence. Waiting for theory that 'just works'.

  • First Last
    First Last 15 tuntia sitten

    You won't believe me when I say, but there are a lot of lies in the science world.
    The LHC is secretly an underground satan1c ch1ld sacr1f1cing operation tied to the vat ican and 1llum1nat1.
    The diagram and explanation of it is abstract gibber for ch1ld s3x.
    Alice is really a young girl. This is why it is made of a large ring and small ring. Alice gets covered in "gel" during the particle "smashing" event. They're speaking about orga5m and ej@culation. Read it in wikipedia and think about what I am telling you.
    The very name Alice has always been connected with it since the story Alice in wonderland.
    Everything science tells you about the universe is wrong. Tesla was more right, but not completely understood.
    To understand the universe, we have to look without the ideas of science tainting our thoughts.
    Einstein explaining big bang was just rewording genesis and acting like he is God.
    Whatever subject you try and explain the universe with, ultimately limits it's true expression as the universe.
    There are realms. Reich means realm.
    If the stars were where you think they are, then you'd see them during an eclipse.
    How does a crescent moon and star appear if the moon was closest to earth and orbiting? If you can see the moon in full daylight, then how does the sun hide the stars? Take a good look.

  • Daniel Mitchell
    Daniel Mitchell 15 tuntia sitten

    So how far was the decimal place carried out in the equations 10`50 place would be impossible to compute but still would be a tremendous error in calculating the vastness of the universe, I'm still not convinced "dark matter" and "dark energy" exist outside of compounded computational errors.

  • Raymond Kenneth Petry
    Raymond Kenneth Petry 16 tuntia sitten +1

    ...so, where, was it-in the voids between, the walls of galaxies, or, in the walls with...and, is it clumped, and at what rate does it neutralize, so, when and how did it form, leftovers from the Recombination Era, or, from the Supernova-chaining Era...

  • Raymond Kenneth Petry
    Raymond Kenneth Petry 16 tuntia sitten +1

    ...but rather the FRBs' chirping detected the free electrons, of the ionized 'missing' hydrogen, and thereby direct inference localized that hydrogen...

  • Dan Xander
    Dan Xander 16 tuntia sitten

    Might I suggest adding a seizure warning regarding that CG particle animation?

  • len murray
    len murray 16 tuntia sitten

    Is that u john Wayne, is this me?

  • Jamie Lancaster
    Jamie Lancaster 16 tuntia sitten

    @10:05 those are text messages between one alien to another in different galaxies!

  • Jamie Lancaster
    Jamie Lancaster 16 tuntia sitten +1

    My 12yr old was trying to explain this to me last month but I was distracted by trying to set the clock on my VHS machine😉

  • Walid Akhand
    Walid Akhand 17 tuntia sitten

    I thought it was a thanos video

  • Cricket Class
    Cricket Class 17 tuntia sitten

    *At first I thought it was AMRINDER GILL on the Thumbnail!*

  • Unmay Kharabe
    Unmay Kharabe 17 tuntia sitten


  • fordfinfan
    fordfinfan 17 tuntia sitten

    Wow looks like they took my first comment down! Why? I was calling the guy out for his underhanded negative co.ments about non scientists but whatever. WEAK!!!!!

  • Aubrey De Bliquy
    Aubrey De Bliquy 17 tuntia sitten

    Thanks for being honest and making it clear you are rationalizing.
    That is the circular logic which proliferates abstractions against the dictates of Occam's razor.

  • Nematrec
    Nematrec 18 tuntia sitten

    Epilepsy warning please on that big bang explanation.

  • Marco Pereira
    Marco Pereira 18 tuntia sitten

    Well. I would hold back the congratulations. Scientists really like to be able to write their papers and that means confirmation bias.
    Just consider the papers blocking epoch-dependent G Models (where G is Newton's Gravitational Constant).
    The confirmation bias is so ludicrous that the reason why the paper should had not been published is right on the Abstract..:)
    "An important caveat is that it rests on the assumption that the same mass of 56Ni is burned to create the standard candle regardless of redshift."
    These people used L-CDM to "test" epoch-dependent G without changing the Chandrasekhar Masses of the White Dwarf Supernovae Precursors. No wonder they couldn't find any G dependence. The same goes for the Lunar Ranging Article. The predicted epoch-dependent G rate of recession of the Moon is smaller than the observed, which allows for extra sources of Moon orbit modulations (tidal locking, etc).
    I also demonstrated the there is no need for Dark Matter in any astronomical observation:
    and that the Universe does not follow Einstein's equations and thus GR , L-CDM is wrong.
    So, the extra baryonic matter just adds to 100% of what is supposed to be out there.
    I would welcome our nice scientist to engage with me here or through email. I want to get to the bottom of this and understand why scientists cannot take a No for an answer (confirmation bias or pigheadedness)

  • Unicornul Sarvy
    Unicornul Sarvy 18 tuntia sitten

    10:00 you forget aliens

  • Knockturnalist
    Knockturnalist 18 tuntia sitten

    Great video Derek!
    I had to rewind a lot to comprehend all that information but I think I leaned a lot and solidified existing knowledge.
    Even the advertisement was convincing ;-)
    Keep on doing what you do!

  • Stephen Johnston
    Stephen Johnston 18 tuntia sitten

    Really pushing that atheistic worldview instead of being scientifically neutral. Nice

  • Turbo Lag Is Foreplay
    Turbo Lag Is Foreplay 18 tuntia sitten

    How long until we discover Mass Relays?

  • Kristian Santosa
    Kristian Santosa 19 tuntia sitten

    Where were they??
    Short answer: They were found on a whim

    Clicked the video because of the title
    Liked it because of the mindset at 11:50

  • fordfinfan
    fordfinfan 19 tuntia sitten +1

    With that being said I am only encouraging you to say what you mean. There doesn't have to be a war. I respect people who don't beleive in God 100% as long as they admit they don't know for sure and its possible God exists. Us believers will always beleive but as men and women of God we should be embarrassed at the lack of attention and respect and gratitude we give to the hard working, educated and seasoned people who make discoveries, images and videos like these possible. Thank you sir but proving the original hypothesis to be correct is awesome and does validate your work even more but nothing ever will or ever can awaken close minded, selfish, materialistic people to change. They choose like all mankind does. But putting that self righteous spin on the closing comments did more damage than u may think. Stay positive. Negativity and hatred are for lames and I don't take you to be a lame dude. I think regardless of followers which I don't care about because I never have had social media you would earn more respect and attention if you were to say what you really mean instead of being on the fence but with both feet leaning a certain way as is obvious. You could check me and shut me down if I missed something and I will apologize if necessary but I think you should respond to this or just get lost in the crowd of cool guys who think they are always right or wait u r a science person so u are excited to be wrong. Right? Its exciting to think a being such as God could exist if you aren't in support of that right? Also people who don't like science stuff incorporate science in their lives all the time whether they are aware or not, same as math. So 'non science' people are -------------- ? Just saying man, u post, u r accountable. I pray you have continued success and peace and joy in your life and I didn't mean to come hard at you,, but I grew up tough and I'm rough around the edges and you probably needed to hear this because I never post like this let alone something this long to start my day but God aka my conscience aka my heart aka thoughtfulness of the feelings of others led me to comment because I am passionate about how people treat and love others and I am strong but weaker people may have been offended and hurt rather than inspired and amazed. That is on them to feel that way but you could have left that comment of division out and just praised the scientific community on being right without putting anyone down. But hey you got it now! Every piece of matter that ever existed fully accounted for! We are clueless to whats really what, the age of anything period, and the truth behind all the ancient civilizatiozns and their understanding of the cosmos which appears were at the least comprised of giants with technology beyond ours most evident in the cutting and moving of huge stones. We don't have all the answers and never will but let's keep encouraging one another to keep going farther and to dig deeper every day. Thanks! God Bless or good luck to all!

  • Luke Sliminn
    Luke Sliminn 19 tuntia sitten

    Not missing, it was behind the sofa. As for scientists "KNOWING" about universe is about the same as B. Euthanasia Gates knows about medicine.

  • David Wilkie
    David Wilkie 19 tuntia sitten

    From my own experience, learning to recite a whole two millennia of evolved educational narratives, the theoretical made historical, ie assumptions of political reality, ..as if it were real-time absolute textbook knowledge, ..is next to impossible to correct and rethink yourself from first principles reasoning, ..as we are supposed to do(?), but are actually discouraged from doing by tribal "code of silence", hierarchical dominance behaviours. (Eg Forget this if you haven't noticed, Upton Sinclair's coding)
    The Youngs Double Slit Experiment results are enough on their own to discourage reciting Big Bang dogma. So the apparent proximity, density and intensity of emissions and reception of communication information is simultaneously simpler and more complex to interpret in real-time Mathematical logarithmic time coordinate Actuality.
    If you know about the trick of using using FM high frequency beams of light or sound to project an interference positioning source of EM or sound, no further explanation is required, only practical application analysis as it is in Actuality. "Objectification" is not actually commonsensical and coordinated, not methodological Sciencing, it's "Science" the literal word, and corrupted by "senseless" debatable tribal politics. (All true to our nature of course)

  • troy hooper
    troy hooper 19 tuntia sitten +1

    Oddly tho the billions of years since the big bang is nothing more then earth years .. on a cosmic scale being that everything is moving close to the speed of light if not the speed of light the time frame in which everything has happened on a cosmic scale is only happened within a month comparatively to the time on Earth. For those that are probably wondering what the hell are you talkin about time dilation.

    • fordfinfan
      fordfinfan 18 tuntia sitten

      Haha no kidding. Never thought about that relativity factor. Messes everything up.

  • Surya Kant
    Surya Kant 19 tuntia sitten

    I’m just enjoying the vibes 🤫

  • shakti veda
    shakti veda 21 tunti sitten

    At 3:28 you've already said the word "Big Bang" five times...I wonder which theory you're pushing here...let me guess...uh-oh, perhaps...the "Big Bang?"...

  • AxeMastersINC
    AxeMastersINC 21 tunti sitten

    lol, what dark matter? FFS.

  • djstona
    djstona 21 tunti sitten

    excellent production value most people would have just made that chart on a pc with smart draw not a cut out that's dedication 10/10

  • Cryptoctopus The First
    Cryptoctopus The First 21 tunti sitten

    Now, in science you need to be able to reproduce your experiments...what you are talking about is mostly a story we tell ourselves to explain what we can observe today. I wouldnt hang my shirt on that kind of science.

  • Tiny Ford
    Tiny Ford 21 tunti sitten

    This video presupposes that dark matter exists, it presupposes that the found part constitutes the half. It presupposes the big bang theory is not a theory...
    This video could’ve been called “Presuppositions about the universe that we can’t prove”

  • FredMarc Orina
    FredMarc Orina 22 tuntia sitten

    Haaaah another problem, please humans stop! I wanna go to Heaven that's all.

  • Aadi Rimal
    Aadi Rimal 22 tuntia sitten +1

    Initially, you say that the deuterium breeaks apart as soon as it is formed and then later you say that it is stable. Contradiction or no?

  • Luis Muñoz
    Luis Muñoz 23 tuntia sitten

    Thank you high school astronomy class for helping me understand most everything in this video 🙏in all seriousness, it's amazing how much humanity has accomplished in learning about the universe, it's kinda humbling, and just absolutely mind blowing to think about

  • Alex Stewart
    Alex Stewart 23 tuntia sitten

    Ask Mum where the missing Universe is.
    If Mum can’t find it, it doesn’t exist

  • Ludwig Schwarzwälder
    Ludwig Schwarzwälder 23 tuntia sitten

    Dislike for the obnoxious ads !!!

  • Aravind Suresh
    Aravind Suresh 23 tuntia sitten

    Me: can't find the other half of the universe
    Mother: I'm coming.

  • Andrej Duck
    Andrej Duck 23 tuntia sitten

    Is this Vsauce 2?

  • Lycanthropist
    Lycanthropist Päivä sitten +2

    What about baryonic matter outside the observable universe, i.e. baryonic matter whose light has not yet reached us?

    • Baptiste Delplanque
      Baptiste Delplanque 12 tuntia sitten

      It's a ratio, or a density. If you consider a bigger space you'll find more baryonic matter... But also more of the rest --> you still end up with 5% of baryonic matter.

  • Jay
    Jay Päivä sitten

    1 In the beginning God created the heavens and the earth. 2 The earth was formless and empty, and darkness covered the deep waters. And the Spirit of God was hovering over the surface of the waters.
    3 Then God said, “Let there be light,” and there was light. 4 And God saw that the light was good. Then he separated the light from the darkness. 5 God called the light “day” and the darkness “night.”
    And evening passed and morning came, marking the first day.
    6 Then God said, “Let there be a space between the waters, to separate the waters of the heavens from the waters of the earth.” 7 And that is what happened. God made this space to separate the waters of the earth from the waters of the heavens. 8 God called the space “sky.”
    And evening passed and morning came, marking the second day.
    9 Then God said, “Let the waters beneath the sky flow together into one place, so dry ground may appear.” And that is what happened. 10 God called the dry ground “land” and the waters “seas.” And God saw that it was good. 11 Then God said, “Let the land sprout with vegetation-every sort of seed-bearing plant, and trees that grow seed-bearing fruit. These seeds will then produce the kinds of plants and trees from which they came.” And that is what happened. 12 The land produced vegetation-all sorts of seed-bearing plants, and trees with seed-bearing fruit. Their seeds produced plants and trees of the same kind. And God saw that it was good.
    13 And evening passed and morning came, marking the third day.
    14 Then God said, “Let lights appear in the sky to separate the day from the night. Let them be signs to mark the seasons, days, and years. 15 Let these lights in the sky shine down on the earth.” And that is what happened. 16 God made two great lights-the larger one to govern the day, and the smaller one to govern the night. He also made the stars. 17 God set these lights in the sky to light the earth, 18 to govern the day and night, and to separate the light from the darkness. And God saw that it was good.
    19 And evening passed and morning came, marking the fourth day.
    20 Then God said, “Let the waters swarm with fish and other life. Let the skies be filled with birds of every kind.” 21 So God created great sea creatures and every living thing that scurries and swarms in the water, and every sort of bird-each producing offspring of the same kind. And God saw that it was good. 22 Then God blessed them, saying, “Be fruitful and multiply. Let the fish fill the seas, and let the birds multiply on the earth.”
    23 And evening passed and morning came, marking the fifth day.
    24 Then God said, “Let the earth produce every sort of animal, each producing offspring of the same kind-livestock, small animals that scurry along the ground, and wild animals.” And that is what happened. 25 God made all sorts of wild animals, livestock, and small animals, each able to produce offspring of the same kind. And God saw that it was good.
    26 Then God said, “Let us make human beings in our image, to be like us. They will reign over the fish in the sea, the birds in the sky, the livestock, all the wild animals on the earth, and the small animals that scurry along the ground.”
    27 So God created human beings in his own image.
    In the image of God he created them;
    male and female he created them.
    28 Then God blessed them and said, “Be fruitful and multiply. Fill the earth and govern it. Reign over the fish in the sea, the birds in the sky, and all the animals that scurry along the ground.”
    29 Then God said, “Look! I have given you every seed-bearing plant throughout the earth and all the fruit trees for your food. 30 And I have given every green plant as food for all the wild animals, the birds in the sky, and the small animals that scurry along the ground-everything that has life.” And that is what happened.
    31 Then God looked over all he had made, and he saw that it was very good!
    And evening passed and morning came, marking the sixth day.

  • Sammichsmith
    Sammichsmith Päivä sitten +1

    The Lyman-Alpha Forest is pretty trippy to me. To be able to extract so much information from one signal is amazing. The expansion of the universe causing redshift makes a lot more sense to me now.

  • i ZZ
    i ZZ Päivä sitten

    Wow no thanos joke..you guys are amazing

  • the boss
    the boss Päivä sitten

    Too much science

  • Abhishek Gupta
    Abhishek Gupta Päivä sitten

    A big fan of yours " can you make a video on Beirut explosion " how much was the pressure of shock wave and and the mushroom cloud formation.

  • wiwh
    wiwh Päivä sitten

    00:47 No, the first question I'm asking myself is how did he keep the text on the same plane as the physical piechart in 00:40-00:47. Fancy!

  • Martin Von Wunderpants
    Martin Von Wunderpants Päivä sitten

    As soon as you mentioned the Big Bang, I switched off.

  • Emma Humphries
    Emma Humphries Päivä sitten +1

    Serendipity! I just watched Emily Levesque's talk on stories from observational astronomy, and she talked about how the fast radio bursts were originally ignored as "local noise" and that by doing the work to isolate the origins of the noise-people opening the microwaved or in the lunch room before the timer shut the microwave generator off-they found one burst which wasn't a microwave door being opened.

  • Sam Ryan
    Sam Ryan Päivä sitten

    My brain drain: solving the quartic solution and designing a (realistic) house perfect for an(ever)yone.

  • Sameer
    Sameer Päivä sitten

    Such an interesting video.

  • Himanshu Anand
    Himanshu Anand Päivä sitten

    +9:14 I thought high frequency light was scattered more than low frequency. Or is that just for the visible spectrum?

  • Niels Evant
    Niels Evant Päivä sitten

    ...before I met you...

  • Jhonson Ozuna
    Jhonson Ozuna Päivä sitten

    Ya no van hacer las traducciones ?

  • Sigmund Freud
    Sigmund Freud Päivä sitten

    I stop this video after you say something was created after the first 20 minutes of the big bang. This is not science anymore stop making more dogmas

  • Peter Denison
    Peter Denison Päivä sitten +1

    Please, someone, correct me if I'm wrong but at 5:00-6:05 he talks about how the light detected from a distant quasar is redshifted the farther it travels. He furthers this point by talking about the Ultraviolet spike from the Lyman-alpha transition being yellow light by the time it reaches us. He then mentions the absorbed dips in the spectrum as hydrogen absorbs this energy along the path from the quasar to us. What confuses me is the next part where he says that the hydrogens closer to US will absorb shorter and shorter wavelengths. Shouldn't it be that the hydrogens closer to the quasar should be absorbing shorter wavelengths as the photons had less time to red-shift? The diagram also confuses me as at 5:18 it shows the light leaving the quasar to be ultraviolet and red-shifting into yellow light, but then at 5:58 it shows the light leaving the quasar to be yellow and then shifting into UV light by the time it gets to us.

    • Luis Muñoz
      Luis Muñoz 23 tuntia sitten

      Responding so I can see the answer too

  • johfc
    johfc Päivä sitten

    Just a thought. That early "nuclear fusion" creates a lot of nuclear energy, doesn't it?